[INFO] cloning repository https://github.com/r4gus/greasy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/r4gus/greasy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr4gus%2Fgreasy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr4gus%2Fgreasy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d04f11e6f70093cae207028809d9cdb2143acd56
[INFO] testing r4gus/greasy against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr4gus%2Fgreasy" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/r4gus/greasy on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/r4gus/greasy
[INFO] finished tweaking git repo https://github.com/r4gus/greasy
[INFO] tweaked toml for git repo https://github.com/r4gus/greasy written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/r4gus/greasy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aeb2e821babf8d6e840d337798987ec81a0e8b27605fe65dbde2ca1035703188
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "aeb2e821babf8d6e840d337798987ec81a0e8b27605fe65dbde2ca1035703188", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aeb2e821babf8d6e840d337798987ec81a0e8b27605fe65dbde2ca1035703188", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeb2e821babf8d6e840d337798987ec81a0e8b27605fe65dbde2ca1035703188", kill_on_drop: false }`
[INFO] [stdout] aeb2e821babf8d6e840d337798987ec81a0e8b27605fe65dbde2ca1035703188
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90d7d44f01502211aabf01f8e9c63a191b4323a613b9cd0db62b7adc974778dc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "90d7d44f01502211aabf01f8e9c63a191b4323a613b9cd0db62b7adc974778dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling ascii v1.0.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling greasy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ffi::CString`
[INFO] [stdout]  --> src/formats/fat_entry.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     ffi::CString,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sector_to_cluster`
[INFO] [stdout]    --> src/formats/fat.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn sector_to_cluster(&self, sector: &Sector) -> Cluster {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SubCommand`
[INFO] [stdout]  --> src/main.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use clap::{Arg, App, SubCommand};
[INFO] [stdout]   |                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.76s
[INFO] running `Command { std: "docker" "inspect" "90d7d44f01502211aabf01f8e9c63a191b4323a613b9cd0db62b7adc974778dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90d7d44f01502211aabf01f8e9c63a191b4323a613b9cd0db62b7adc974778dc", kill_on_drop: false }`
[INFO] [stdout] 90d7d44f01502211aabf01f8e9c63a191b4323a613b9cd0db62b7adc974778dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6abfe4a0de97e9dbbf753843389b5337e8b5a59c72a361434e8b43e3de0cc2b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e6abfe4a0de97e9dbbf753843389b5337e8b5a59c72a361434e8b43e3de0cc2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling greasy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ffi::CString`
[INFO] [stdout]  --> src/formats/fat_entry.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     ffi::CString,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sector_to_cluster`
[INFO] [stdout]    --> src/formats/fat.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn sector_to_cluster(&self, sector: &Sector) -> Cluster {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SubCommand`
[INFO] [stdout]  --> src/main.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use clap::{Arg, App, SubCommand};
[INFO] [stdout]   |                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ffi::CString`
[INFO] [stdout]  --> src/formats/fat_entry.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     ffi::CString,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sector_to_cluster`
[INFO] [stdout]    --> src/formats/fat.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn sector_to_cluster(&self, sector: &Sector) -> Cluster {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "e6abfe4a0de97e9dbbf753843389b5337e8b5a59c72a361434e8b43e3de0cc2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6abfe4a0de97e9dbbf753843389b5337e8b5a59c72a361434e8b43e3de0cc2b", kill_on_drop: false }`
[INFO] [stdout] e6abfe4a0de97e9dbbf753843389b5337e8b5a59c72a361434e8b43e3de0cc2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ab40a11cad435157a89fdfda24a55454943c412b6f214870388322c85384224c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ab40a11cad435157a89fdfda24a55454943c412b6f214870388322c85384224c", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `ffi::CString`
[INFO] [stderr]  --> src/formats/fat_entry.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     ffi::CString,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `sector_to_cluster`
[INFO] [stderr]    --> src/formats/fat.rs:110:8
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn sector_to_cluster(&self, sector: &Sector) -> Cluster {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ffi::CString`
[INFO] [stderr]  --> src/formats/fat_entry.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     ffi::CString,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `sector_to_cluster`
[INFO] [stderr]    --> src/formats/fat.rs:110:8
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn sector_to_cluster(&self, sector: &Sector) -> Cluster {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SubCommand`
[INFO] [stderr]  --> src/main.rs:6:22
[INFO] [stderr]   |
[INFO] [stderr] 6 | use clap::{Arg, App, SubCommand};
[INFO] [stderr]   |                      ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/greasy-8433563c4bc51f57
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/greasy-6754fa5d2269a1fd
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests greasy
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/formats/fat_entry.rs - formats::fat_entry::Entry::checksum (line 76) ... FAILED
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stdout] test src/formats/fat.rs - formats::fat::Fat::new (line 202) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/formats/fat_entry.rs - formats::fat_entry::Entry::checksum (line 76) stdout ----
[INFO] [stdout] error[E0603]: struct `Entry` is private
[INFO] [stdout]  --> src/formats/fat_entry.rs:77:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use greasy::formats::fat::Entry;
[INFO] [stdout]   |                           ^^^^^ private struct
[INFO] [stdout]   |
[INFO] [stdout] note: the struct `Entry` is defined here
[INFO] [stdout]  --> /opt/rustwide/workdir/src/formats/fat.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::fat_entry::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0603`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/formats/fat.rs - formats::fat::Fat::new (line 202) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `MmapOptions`
[INFO] [stdout]  --> src/formats/fat.rs:204:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use MmapOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^ no external crate `MmapOptions`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]   --> src/formats/fat.rs:207:12
[INFO] [stdout]    |
[INFO] [stdout] 3  | / fn main() {
[INFO] [stdout] 4  | | use greasy::formats::fat;
[INFO] [stdout] 5  | | use MmapOptions;
[INFO] [stdout] 6  | | use std::fs::File;
[INFO] [stdout] 7  | |
[INFO] [stdout] 8  | | let file = File::open("fat-16.dd")?;                    // open a fat volume
[INFO] [stdout]    | |            ^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] ...  |
[INFO] [stdout] 11 | | let fat = fat::Fat::new(mem);                           // create a new Fat object
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]   --> src/formats/fat.rs:208:20
[INFO] [stdout]    |
[INFO] [stdout] 3  | / fn main() {
[INFO] [stdout] 4  | | use greasy::formats::fat;
[INFO] [stdout] 5  | | use MmapOptions;
[INFO] [stdout] 6  | | use std::fs::File;
[INFO] [stdout] ...  |
[INFO] [stdout] 9  | | let mem = unsafe { MmapOptions::new().map(&file)? };    // map the volume into memory
[INFO] [stdout]    | |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 10 | |
[INFO] [stdout] 11 | | let fat = fat::Fat::new(mem);                           // create a new Fat object
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/formats/fat.rs - formats::fat::Fat::new (line 202)
[INFO] [stdout]     src/formats/fat_entry.rs - formats::fat_entry::Entry::checksum (line 76)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ab40a11cad435157a89fdfda24a55454943c412b6f214870388322c85384224c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab40a11cad435157a89fdfda24a55454943c412b6f214870388322c85384224c", kill_on_drop: false }`
[INFO] [stdout] ab40a11cad435157a89fdfda24a55454943c412b6f214870388322c85384224c